Take2: allow NON_US share server and custom share server

Cartfile

@@ -1,7 +1,7 @@
 github "LoopKit/LoopKit" == 1.4.1
 github "LoopKit/xDripG5" ~> 0.8.0
 github "i-schuetz/SwiftCharts" ~> 0.6.0
-github "mddub/dexcom-share-client-swift" == 0.2.1
+github "mddub/dexcom-share-client-swift" == 0.4.0
 github "mddub/G4ShareSpy" == 0.3.2
 github "ps2/rileylink_ios" == 1.1.1
 github "amplitude/Amplitude-iOS" ~> 3.8.5

Cartfile.resolved

@@ -1,7 +1,7 @@
-github "LoopKit/LoopKit" "v1.4.1"
-github "LoopKit/xDripG5" "v0.8.0"
 github "amplitude/Amplitude-iOS" "v3.14.1"
-github "i-schuetz/SwiftCharts" "0.6"
 github "mddub/G4ShareSpy" "v0.3.2"
-github "mddub/dexcom-share-client-swift" "v0.2.1"
+github "LoopKit/LoopKit" "v1.4.1"
+github "i-schuetz/SwiftCharts" "0.6"
+github "mddub/dexcom-share-client-swift" "v0.4.0"
 github "ps2/rileylink_ios" "v1.1.1"
+github "LoopKit/xDripG5" "v0.8.0"

Loop/Models/ServiceAuthentication/ShareService.swift

@@ -36,14 +36,35 @@ class ShareService: ServiceAuthentication {
                 value: url?.absoluteString,
                 options: [
                     (title: NSLocalizedString("US", comment: "U.S. share server option title"),
-                     value: DexcomShareURL.absoluteString)
+                     value: KnownShareServers.US.rawValue),
+                    (title: NSLocalizedString("Outside US", comment: "Outside US share server option title"),
+                     value: KnownShareServers.NON_US.rawValue)
+
                 ]
             )
         ]
 
-        if let username = username, let password = password, url != nil {
+        /*
+         To enable Loop to use a custom share server, change the value of customServer 
+         and remove the comment markers on line 55 and 62.
+
+         You can find installation instructions for one such custom share server at
+         https://github.com/dabear/NightscoutShareServer
+         */
+
+        /*
+        let customServer = "https://REPLACEME"
+        let customServerTitle = "Custom"
+
+        credentials[2].options?.append(
+                (title: NSLocalizedString(customServerTitle, comment: "Custom share server option title"),
+                value: customServer))
+        */
+
+
+        if let username = username, let password = password, let url = url {
             isAuthorized = true
-            client = ShareClient(username: username, password: password)
+            client = ShareClient(username: username, password: password, shareServer: url.absoluteString)
         }
     }
 
@@ -69,14 +90,15 @@ class ShareService: ServiceAuthentication {
     var isAuthorized: Bool = false
 
     func verify(_ completion: @escaping (_ success: Bool, _ error: Error?) -> Void) {
-        guard let username = username, let password = password, url != nil else {
+        guard let username = username, let password = password, let url = url else {
             completion(false, nil)
             return
         }
 
-        let client = ShareClient(username: username, password: password)
+        let client = ShareClient(username: username, password: password, shareServer: url.absoluteString)
         client.fetchLast(1) { (error, _) in
             completion(true, error)
+
         }
         self.client = client
     }
@@ -91,7 +113,7 @@ class ShareService: ServiceAuthentication {
 }
 
 
-private let DexcomShareURL = URL(string: "https://share1.dexcom.com")!
+private let DexcomShareURL = URL(string: KnownShareServers.US.rawValue)!
 private let DexcomShareServiceLabel = "DexcomShare1"